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meta.ts
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meta.ts
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import * as handlebars from 'handlebars';
import * as fs from 'fs';
import * as path from 'path';
import moment from 'moment';
import * as pep440 from '@renovate/pep440';
import * as semver from 'semver';
import {Inputs, tmpDir} from './context';
import {ReposGetResponseData} from './github';
import * as tcl from './tag';
import * as fcl from './flavor';
import * as core from '@actions/core';
import {Context} from '@actions/github/lib/context';
export interface Version {
main: string | undefined;
partial: string[];
latest: boolean | undefined;
}
export class Meta {
public readonly version: Version;
private readonly inputs: Inputs;
private readonly context: Context;
private readonly repo: ReposGetResponseData;
private readonly tags: tcl.Tag[];
private readonly flavor: fcl.Flavor;
private readonly date: Date;
constructor(inputs: Inputs, context: Context, repo: ReposGetResponseData) {
// Needs to override Git reference with pr ref instead of upstream branch ref
// for pull_request_target event
if (/pull_request_target/.test(context.eventName)) {
context.ref = `refs/pull/${context.payload.number}/merge`;
}
this.inputs = inputs;
this.context = context;
this.repo = repo;
this.tags = tcl.Transform(inputs.tags);
this.flavor = fcl.Transform(inputs.flavor);
this.date = new Date();
this.version = this.getVersion();
}
private getVersion(): Version {
let version: Version = {
main: undefined,
partial: [],
latest: undefined
};
for (const tag of this.tags) {
if (!/true/i.test(tag.attrs['enable'])) {
continue;
}
switch (tag.type) {
case tcl.Type.Schedule: {
version = this.procSchedule(version, tag);
break;
}
case tcl.Type.Semver: {
version = this.procSemver(version, tag);
break;
}
case tcl.Type.Pep440: {
version = this.procPep440(version, tag);
break;
}
case tcl.Type.Match: {
version = this.procMatch(version, tag);
break;
}
case tcl.Type.Ref: {
if (tag.attrs['event'] == tcl.RefEvent.Branch) {
version = this.procRefBranch(version, tag);
} else if (tag.attrs['event'] == tcl.RefEvent.Tag) {
version = this.procRefTag(version, tag);
} else if (tag.attrs['event'] == tcl.RefEvent.PR) {
version = this.procRefPr(version, tag);
}
break;
}
case tcl.Type.Edge: {
version = this.procEdge(version, tag);
break;
}
case tcl.Type.Raw: {
version = this.procRaw(version, tag);
break;
}
case tcl.Type.Sha: {
version = this.procSha(version, tag);
break;
}
}
}
version.partial = version.partial.filter((item, index) => version.partial.indexOf(item) === index);
if (version.latest == undefined) {
version.latest = false;
}
return version;
}
private procSchedule(version: Version, tag: tcl.Tag): Version {
if (!/schedule/.test(this.context.eventName)) {
return version;
}
const currentDate = this.date;
const vraw = this.setValue(
handlebars.compile(tag.attrs['pattern'])({
date: function (format) {
return moment(currentDate).utc().format(format);
}
}),
tag
);
return Meta.setVersion(version, vraw, this.flavor.latest == 'auto' ? false : this.flavor.latest == 'true');
}
private procSemver(version: Version, tag: tcl.Tag): Version {
if (!/^refs\/tags\//.test(this.context.ref) && tag.attrs['value'].length == 0) {
return version;
}
let vraw: string;
if (tag.attrs['value'].length > 0) {
vraw = this.setGlobalExp(tag.attrs['value']);
} else {
vraw = this.context.ref.replace(/^refs\/tags\//g, '').replace(/\//g, '-');
}
if (!semver.valid(vraw)) {
core.warning(`${vraw} is not a valid semver. More info: https://semver.org/`);
return version;
}
let latest: boolean = false;
const sver = semver.parse(vraw, {
includePrerelease: true
});
if (semver.prerelease(vraw)) {
vraw = this.setValue(handlebars.compile('{{version}}')(sver), tag);
} else {
vraw = this.setValue(handlebars.compile(tag.attrs['pattern'])(sver), tag);
latest = true;
}
return Meta.setVersion(version, vraw, this.flavor.latest == 'auto' ? latest : this.flavor.latest == 'true');
}
private procPep440(version: Version, tag: tcl.Tag): Version {
if (!/^refs\/tags\//.test(this.context.ref) && tag.attrs['value'].length == 0) {
return version;
}
let vraw: string;
if (tag.attrs['value'].length > 0) {
vraw = this.setGlobalExp(tag.attrs['value']);
} else {
vraw = this.context.ref.replace(/^refs\/tags\//g, '').replace(/\//g, '-');
}
if (!pep440.valid(vraw)) {
core.warning(`${vraw} does not conform to PEP 440. More info: https://www.python.org/dev/peps/pep-0440`);
return version;
}
let latest: boolean = false;
const pver = pep440.explain(vraw);
if (pver.is_prerelease || pver.is_postrelease || pver.is_devrelease) {
vraw = this.setValue(pep440.clean(vraw), tag);
} else {
vraw = this.setValue(
handlebars.compile(tag.attrs['pattern'])({
raw: function () {
return vraw;
},
version: function () {
return pep440.clean(vraw);
},
major: function () {
return pep440.major(vraw);
},
minor: function () {
return pep440.minor(vraw);
},
patch: function () {
return pep440.patch(vraw);
}
}),
tag
);
latest = true;
}
return Meta.setVersion(version, vraw, this.flavor.latest == 'auto' ? latest : this.flavor.latest == 'true');
}
private procMatch(version: Version, tag: tcl.Tag): Version {
if (!/^refs\/tags\//.test(this.context.ref) && tag.attrs['value'].length == 0) {
return version;
}
let vraw: string;
if (tag.attrs['value'].length > 0) {
vraw = this.setGlobalExp(tag.attrs['value']);
} else {
vraw = this.context.ref.replace(/^refs\/tags\//g, '').replace(/\//g, '-');
}
let tmatch;
const isRegEx = tag.attrs['pattern'].match(/^\/(.+)\/(.*)$/);
if (isRegEx) {
tmatch = vraw.match(new RegExp(isRegEx[1], isRegEx[2]));
} else {
tmatch = vraw.match(tag.attrs['pattern']);
}
if (!tmatch) {
core.warning(`${tag.attrs['pattern']} does not match ${vraw}.`);
return version;
}
if (typeof tmatch[tag.attrs['group']] === 'undefined') {
core.warning(`Group ${tag.attrs['group']} does not exist for ${tag.attrs['pattern']} pattern.`);
return version;
}
vraw = this.setValue(tmatch[tag.attrs['group']], tag);
return Meta.setVersion(version, vraw, this.flavor.latest == 'auto' ? true : this.flavor.latest == 'true');
}
private procRefBranch(version: Version, tag: tcl.Tag): Version {
if (!/^refs\/heads\//.test(this.context.ref)) {
return version;
}
const vraw = this.setValue(this.context.ref.replace(/^refs\/heads\//g, '').replace(/[^a-zA-Z0-9._-]+/g, '-'), tag);
return Meta.setVersion(version, vraw, this.flavor.latest == 'auto' ? false : this.flavor.latest == 'true');
}
private procRefTag(version: Version, tag: tcl.Tag): Version {
if (!/^refs\/tags\//.test(this.context.ref)) {
return version;
}
const vraw = this.setValue(this.context.ref.replace(/^refs\/tags\//g, '').replace(/\//g, '-'), tag);
return Meta.setVersion(version, vraw, this.flavor.latest == 'auto' ? true : this.flavor.latest == 'true');
}
private procRefPr(version: Version, tag: tcl.Tag): Version {
if (!/^refs\/pull\//.test(this.context.ref)) {
return version;
}
const vraw = this.setValue(this.context.ref.replace(/^refs\/pull\//g, '').replace(/\/merge$/g, ''), tag);
return Meta.setVersion(version, vraw, this.flavor.latest == 'auto' ? false : this.flavor.latest == 'true');
}
private procEdge(version: Version, tag: tcl.Tag): Version {
if (!/^refs\/heads\//.test(this.context.ref)) {
return version;
}
let val = this.context.ref.replace(/^refs\/heads\//g, '').replace(/[^a-zA-Z0-9._-]+/g, '-');
if (tag.attrs['branch'].length == 0) {
tag.attrs['branch'] = this.repo.default_branch;
}
if (tag.attrs['branch'] != val) {
return version;
}
const vraw = this.setValue('edge', tag);
return Meta.setVersion(version, vraw, this.flavor.latest == 'auto' ? false : this.flavor.latest == 'true');
}
private procRaw(version: Version, tag: tcl.Tag): Version {
const vraw = this.setValue(this.setGlobalExp(tag.attrs['value']), tag);
return Meta.setVersion(version, vraw, this.flavor.latest == 'auto' ? false : this.flavor.latest == 'true');
}
private procSha(version: Version, tag: tcl.Tag): Version {
if (!this.context.sha) {
return version;
}
let val = this.context.sha;
if (tag.attrs['format'] === tcl.ShaFormat.Short) {
val = this.context.sha.substr(0, 7);
}
const vraw = this.setValue(val, tag);
return Meta.setVersion(version, vraw, this.flavor.latest == 'auto' ? false : this.flavor.latest == 'true');
}
private static setVersion(version: Version, val: string, latest: boolean): Version {
if (val.length == 0) {
return version;
}
if (version.main == undefined) {
version.main = val;
} else if (val !== version.main) {
version.partial.push(val);
}
if (version.latest == undefined) {
version.latest = latest;
}
return version;
}
private setValue(val: string, tag: tcl.Tag): string {
if (tag.attrs.hasOwnProperty('prefix')) {
val = `${this.setGlobalExp(tag.attrs['prefix'])}${val}`;
} else if (this.flavor.prefix.length > 0) {
val = `${this.setGlobalExp(this.flavor.prefix)}${val}`;
}
if (tag.attrs.hasOwnProperty('suffix')) {
val = `${val}${this.setGlobalExp(tag.attrs['suffix'])}`;
} else if (this.flavor.suffix.length > 0) {
val = `${val}${this.setGlobalExp(this.flavor.suffix)}`;
}
return val;
}
private setGlobalExp(val): string {
const ctx = this.context;
return handlebars.compile(val)({
branch: function () {
if (!/^refs\/heads\//.test(ctx.ref)) {
return '';
}
return ctx.ref.replace(/^refs\/heads\//g, '').replace(/[^a-zA-Z0-9._-]+/g, '-');
},
tag: function () {
if (!/^refs\/tags\//.test(ctx.ref)) {
return '';
}
return ctx.ref.replace(/^refs\/tags\//g, '').replace(/\//g, '-');
},
sha: function () {
return ctx.sha.substr(0, 7);
}
});
}
public getTags(): Array<string> {
if (!this.version.main) {
return [];
}
let tags: Array<string> = [];
for (const image of this.inputs.images) {
const imageLc = image.toLowerCase();
tags.push(`${imageLc}:${this.version.main}`);
for (const partial of this.version.partial) {
tags.push(`${imageLc}:${partial}`);
}
if (this.version.latest) {
tags.push(`${imageLc}:${this.flavor.prefixLatest ? this.flavor.prefix : ''}latest${this.flavor.suffixLatest ? this.flavor.suffix : ''}`);
}
}
return tags;
}
public getLabels(): Array<string> {
let labels: Array<string> = [
`org.opencontainers.image.title=${this.repo.name || ''}`,
`org.opencontainers.image.description=${this.repo.description || ''}`,
`org.opencontainers.image.url=${this.repo.html_url || ''}`,
`org.opencontainers.image.source=${this.repo.html_url || ''}`,
`org.opencontainers.image.version=${this.version.main || ''}`,
`org.opencontainers.image.created=${this.date.toISOString()}`,
`org.opencontainers.image.revision=${this.context.sha || ''}`,
`org.opencontainers.image.licenses=${this.repo.license?.spdx_id || ''}`
];
labels.push(...this.inputs.labels);
return labels;
}
public getJSON(): {} {
return {
tags: this.getTags(),
labels: this.getLabels().reduce((res, label) => {
const matches = label.match(/([^=]*)=(.*)/);
if (!matches) {
return res;
}
res[matches[1]] = matches[2];
return res;
}, {})
};
}
public getBakeFile(): string {
const bakeFile = path.join(tmpDir(), 'docker-metadata-action-bake.json').split(path.sep).join(path.posix.sep);
fs.writeFileSync(
bakeFile,
JSON.stringify(
{
target: {
[this.inputs.bakeTarget]: {
tags: this.getTags(),
labels: this.getLabels().reduce((res, label) => {
const matches = label.match(/([^=]*)=(.*)/);
if (!matches) {
return res;
}
res[matches[1]] = matches[2];
return res;
}, {}),
args: {
DOCKER_META_IMAGES: this.inputs.images.join(','),
DOCKER_META_VERSION: this.version.main
}
}
}
},
null,
2
)
);
return bakeFile;
}
}